commons-cli
commons-cli
1.3.1

import org.apache.commons.cli.HelpFormatter;
import org.apache.commons.cli.Options;
import cn.v1.video.crawl.document.DocumentParser;
import cn.v1.video.crawl.document.HttpClientDocumentParserImpl;
import cn.v1.video.crawl.document.HttpUnitDocumentParserImpl;
* 需要加入 依赖包
commons-cli
commons-cli
1.3.1
* @author Administrator
public class Cli {
private static final Options options = new Options();
private static final DocumentParser httpDocumentParser=new HttpClientDocumentParserImpl();
private static final DocumentParser httpUnitDocumentParser=new HttpUnitDocumentParserImpl();
static{
* 第一个参数 命令的简写； 第二个参数命令 命令的全写； 第三参数表示是否有参数； 第四个参数 代表 参数的说明
// 添加 -h 参数
options.addOption("h", "help",false, "The command help");
options.addOption("b", "http",true, "input url and crawl by http");
options.addOption("t", "httpUnit",true, "input url and crawl by httpUnit");
public static void help(){
* 打印命令帮助提示
HelpFormatter hf = new HelpFormatter();
hf.printHelp("help info", options);
public static void crawlByHttp(String url){
try {
String content=httpDocumentParser.getContent(url);
System.out.println(content);
} catch (Exception e) {
e.printStackTrace();
public static void crawlByHttpUnit(String url){
try {
String content=httpUnitDocumentParser.getContent(url);
System.out.println(content);
} catch (Exception e) {
e.printStackTrace();
public static Options getOptions(){
return options;
}

import org.apache.commons.cli.CommandLine;
import org.apache.commons.cli.CommandLineParser;
import org.apache.commons.cli.DefaultParser;
import org.apache.commons.cli.ParseException;
public class StartUp
public static void main( String[] args )
try {
if(args==null || args.length==0 ){
Cli.help();
return;
CommandLineParser parser = new DefaultParser(); //默认的匹配器
CommandLine cmd = parser.parse(Cli.getOptions(), args); // 定义和输入进行匹配
if(cmd.hasOption('h')){
Cli.help();
if(cmd.hasOption('b')){
String url=cmd.getOptionValue('b');
if(url==null || url.equals("")){
System.out.println("please input url");
Cli.crawlByHttp(url);
if(cmd.hasOption('t')){
String url=cmd.getOptionValue('t');
if(url==null || url.equals("")){
System.out.println("please input url");
Cli.crawlByHttpUnit(url);
} catch (ParseException e) {
e.printStackTrace();
}